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TermDefinition
- Q FlagYellow flag flown from starboard spreaders or flagstaff when entering a foreign port (or Channel Isles) requesting customs clearance. Don’t(...) Read more
- Quarter Berth A single bunk tucked under the cockpit. Usually found in smaller boats where there is no room for a cabin in this location. Read more
- Phonetic Alphabet Quebec Phonetic alphabet letter Q. Health Status: When a vessel displays the Quebec flag, it communicates that the vessel is reporting its health(...) Read more
- RaceA strong tidal stream Read more
- RRS The Racing Rules of Sailing (RRS) governs the sport of sailboat and sailboard racing. It is revised and published every four years by World Sailing. Read more
- Racing Rules of Sailing The Racing Rules of Sailing (RRS) governs the sport of sailboat and sailboard racing. It is revised and published every four years by World Sailing. Read more
- RadarObject detection system which uses radio waves to determine the range, direction or speed of vessels and other objects. The radar dish or(...) Read more
- Radar ReflectorA device hoisted or fitted up the mast to enhance the reflection of radar energy Read more
- RaftTwo or more vessels tied up alongside each other Read more
- Range of TideThe difference between sea level at high water and sea level at the preceding or following low water Read more
- Raster chartElectronic chart which is a direct copy of a paper chart with limited zooming capability Read more
- Rate The speed of a tidal stream or current, given in knots and tenths of a knot. Read more
- Reach "Reach" refers to the point of sail where the wind is coming from the side of the boat, roughly perpendicular to the direction the boat is(...) Read more
- ReachingSailing across the wind: from about 60° to about 160° off the wind. Reaching consists of "close reaching" (about 60° to 80°), "beam reaching"(...) Read more
- Ready AboutThe helmsman’s shout that he intends to go about shortly Read more
- ReefTo reduce the area of sail, particularly the mainsail Read more
- Reefing LinesReefing lines are used to reduce the size of the mainsail. By reducing the size of the mainsail we can improve the yacht's stability and(...) Read more
- Restricted in Ability to ManoeuvreUnable to get out of the way due to work being done. Could be a dredger, towing vessel etc. Read more
- Restricted VisibilityVisibility restricted by rain, drizzle, fog, etc., during which vessels are required to proceed at a safe speed and to navigate with extreme caution Read more
- Rhumb LineA line on the surface of the earth that cuts all meridians at the same angle. On a standard Mercator chart the rhumb line appears as a straight line Read more